"May 1st, International Workers' Day, commemorates the historic struggle of working people throughout the world, and is recognized in every country except the United States, Canada, and South Africa. This despite the fact that the holiday began in the 1880s in the United States, with the fight for an eight-hour work day."
I think celebrating May Day would be more logical though, since we really need a break from school towards finals, NOT two weeks after the start of the first semester as Labor Day does.
actually it was a holiday before the communists, but it makes sense that the communists adopted a workers holiday, since communists claimed to do what was best for the common man.